Silicon Carbide Bushing Manufacturer For High-Precision Custom Requirements
Silicon carbide bushes produced by Newthink are known for their excellent hardness, close to diamond, which directly translates into excellent wear resistance. They are widely used in mechanical seals of pumps and compressors, bearings in high-speed rotating machinery, and wear-resistant parts in sandblasting equipment. The use of silicon carbide bushings can not only extend the service life of equipment and reduce maintenance costs, but also minimize downtime and improve overall system performance.
Silicon Carbide Bushing for Various Industries
Newthink can provide silicon carbide sleeves with excellent performance in various applications, which can help customers save costs.
A mechanical seal component that prevents pumps and other equipment from leaking.
Such as water pumps, high pressure pumps, magnetic pumps, etc., with good wear resistance and corrosion resistance.
It can maintain good performance and stable operation at 1650℃.
Silicon carbide sleeves are designed specifically for semiconductor manufacturing, with the advantages of ultra-purity and no contamination.
Features and Applications of Silicon Carbide Bushing
Silicon carbide bushings are mainly made of silicon carbide and have excellent wear resistance, high temperature resistance, corrosion resistance, and chemical inertness. The following are the main features and applications of silicon carbide bushings.
Silicon carbide bushings are very hard, with a Vickers hardness of >2500 HV, providing excellent wear resistance in harsh application environments.
Silicon carbide bushings can withstand temperatures up to 1650°C and maintain their strength and stability in high-temperature environments.
Silicon carbide sleeves have a low thermal expansion coefficient, which can ensure dimensional accuracy and stability.
Compared with traditional materials (alumina ceramics, stainless steel, etc.), it has higher mechanical properties and significantly longer service life.
Thermal conductivity of 100–120 W/m·K for efficient heat transfer.
Flexural strength up to 400 MPa, better compression and impact resistance.
Ultra-high purity can reduce pollution, and the metal contamination rate is less than 0.01%.
The surface of the silicon carbide sleeve can be polished, and the surface roughness is less than Ra 0.2 μm.
Why Choose Newthink Silicon Carbide Bush?
Silicon carbide bushes produced by Newthink can increase service life and reduce maintenance costs for customers.
Over 14 years of professional experience in bush design and manufacturing.
For urgent orders from customers, we can deliver within 10-15 days.
The processing accuracy can reach 0.01mm and the surface finish can reach Ra0.03.
With ISO certification, we strictly control every step to ensure stable and reliable product quality.
We use high-purity silicon carbide raw materials, and the product density is as high as 3.16g/cm³.
Each product will be strictly tested before packaging to ensure stable product quality.
Silicon Carbide Bushing Production Workshop
Newthink has more than 14 years of advanced silicon carbide bushing manufacturing capabilities. First, we use high-purity silicon carbide powder. Second, we have two processes, reaction sintering and pressureless sintering, according to the specific application requirements. Finally, we are equipped with high-precision processing equipment to achieve complex designs and strict dimensional accuracy to ensure the best material performance.
Meet Us at Exhibitions
Newthink actively participates in major industrial and advanced ceramics exhibitions worldwide throughout the year, such as Italy, Germany, Japan, and Vietnam, meeting directly with our customers.
Parameters for Different Types of Silicon Carbide Bushing
Silicon carbide sleeves have a variety of processes, and their main performances are as follows:
- RBSiC & SSiC
- Comparison of Corrosion Resistance Parameters of Different SiC Materials
| Item | Unit | SSiC | RBSiC |
| Density | g/cm3 | 3.08-3.16 | 2.9-3.02 |
| Hardness HV1 | Kg/mm2 | >2550 | >2350 |
| Young’s Modulus | GPa | 410 | 400 |
| Bending Strength (1200℃) | MPa | 400 | 280 |
| Compressive Strength | MPa | >2500 | >2250 |
| Coefficient of Linear Expansion | 10–⁶/K | 4.0-4.5 | 4.3-4.8 |
| Max Working Temperature | ℃ | 1650 | 1380 |
| Test Environment (Conc. Reagent) | Temp (°C) | Corrosive Weight Loss (No Free SiC) (mg/cm²·yr) | Corrosive Weight Loss (12% SiC) (mg/cm²·yr) |
| 98% H₂SO₄ | 100 | 1.8 | 55 |
| 50% NaOH | 100 | 2.6 | >1000 |
| 53% HF | 25 | <0.2 | 7.9 |
| 85% H₃PO₄ | 100 | <0.2 | 8.8 |
| 70% HNO₃ | 100 | <0.2 | 0.5 |
| 45% KOH | 100 | <0.2 | >1000 |
| 25% HCl | 70 | <0.2 | >1000 |
| 10% HF + 57% HNO₃ | 25 | <0.2 | >1000 |
Related Products
Alumina BushingThere are different purities (such as 92%, 96%, 99%), suitable for high temperature and high insulation scenes.
Ceramic BushingWidely used in high-end equipment and precision instruments.
Ceramic Mechanical SealHigh surface accuracy for leak-free sealing in harsh working conditions.
It has a wide range of applications and is characterized by high precision, high temperature resistance and corrosion resistance.
Silicon carbide bushings have the characteristics of ultra-high hardness and wear resistance, excellent high temperature performance, excellent corrosion resistance, high thermal conductivity, low friction coefficient, dimensional stability, etc. These characteristics enable them to meet the needs of various industries.
Silicon carbide bushings are widely used in the chemical industry, mining, energy and power industry, mechanical seals, pumps, automobiles, industrial furnaces, water treatment industry, aerospace, semiconductor manufacturing, and new energy industries due to their excellent high temperature resistance, corrosion resistance, and thermal shock resistance.
According to different processes, there are two types of silicon carbide sleeves, namely reaction sintered sleeves and pressureless sintered sleeves. The density, high temperature resistance, high temperature strength, surface roughness, price, etc. of the two are different. Customers can choose the appropriate process according to their actual application, or we can recommend the process.
Silicon carbide bushings are generally used to replace steel and alumina bushings. Compared with these two materials, silicon carbide bushings usually have excellent hardness, wear resistance, high temperature performance, and corrosion resistance, thereby extending service life and reducing maintenance costs. The following is a detailed comparison:
① Hardness comparison. The hardness of silicon carbide (Mohs hardness 9.2-9.3) is much higher than stainless steel (Mohs hardness about 5.5-6.5), copper alloy (about 3-4), etc., and even exceeds some engineering ceramics (such as alumina, Mohs hardness 9.0).
② High temperature resistance comparison. Metals such as stainless steel will creep when running for a long time above 300℃, while silicon carbide can work stably for a long time at 1650℃, and the thermal conductivity is more than 10 times that of stainless steel, which can quickly dissipate heat and avoid local overheating and equipment damage.
③ Corrosion resistance comparison. Stainless steel is prone to corrosion in strong acids (such as hydrochloric acid and sulfuric acid) and strong alkalis (such as sodium hydroxide), while silicon carbide hardly reacts with any chemical medium (except hydrofluoric acid). Its corrosion resistance is close to that of polytetrafluoroethylene (PTFE), but its strength and wear resistance far exceed those of plastic materials.
④ Price comparison. Silicon carbide is more expensive, but its service life is more than 10 times that of stainless steel.
